I used this drive to upgrade my Tivo HD. It went from 20 HD hours of recording available (factory version) to 90 HD hours of recording. I've had it running in the Tivo for about a week now, no problems.

With a Antec-MX1 drive enclosure, provides a quiet, reliable (so far) boost to my TiVo Series 3 recording capacity (up to 131 hours of HD).
I passed up a 500GB Seagate to pick up the 750GB model. The price differential was a little steep but worth it.

Used along with an Antec-MX1 fan-cooled case, it has been connected to our Tivo-Series-3 for about 2 weeks. Not sure why but the Tivo seemed to reboot randomly during the first couple of days, but since then has been very stable. What's amazing is how many hours can be stored. Not sure why DB35 is so much more expensive than a regular drive, after all isn't it just software tweaked, something that could be done with a utility?